they are pretty strong
if you want a new remote, you buy the whole system, which comes with the remote and reciever, it can be any mhz or ghz u want..
there is
AM 27mhz
AM 75mhz
FM 75mhz
FM 27mhz
2.4 technology
if u want a new one, i would recomend 2.4 because it has almost no interference and a lot of range
a 2 stick transmitter is mostly used for helicopters and planes
it can be used with the cars, but i wouldnt recommend it, it gets pretty complicated
but for a crawler or scaler with extra stuff, the extra channels would be super helpful
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